EP 2087841 A1 20090812 - AROUSAL LEVEL JUDGING METHOD AND AROUSAL LEVEL JUDGING PROGRAM
Title (en)
AROUSAL LEVEL JUDGING METHOD AND AROUSAL LEVEL JUDGING PROGRAM
Title (de)
VERFAHREN UND PROGRAMM ZUR BEURTEILUNG DES WACHHEITSGRADS
Title (fr)
PROCÉDÉ D'ÉVALUATION DE NIVEAU D'ALERTE ET PROGRAMME D'ÉVALUATION DE NIVEAU D'ALERTE
Publication
Application
Priority
JP 2006323855 W 20061129
Abstract (en)
In a sleepiness level detection apparatus (100), a heart beat detecting unit (110) detects a heart beat signal, a heart beat interval computing unit (120) detects a heart beat interval, and a spectrum computing unit (130) computes spectral density corresponding to fluctuation in the heart beat interval. Further, a peak frequency computing unit (140) computes maximum frequency and maximum spectral density that is spectral density corresponding to the maximum frequency, and a sleepiness level detection unit (170) determines whether a subject is in a wakeful state based on fluctuation trend of the maximum frequency and the maximum spectral density.
IPC 8 full level
A61B 5/16 (2006.01); A61B 5/0245 (2006.01); A61B 5/352 (2021.01)
CPC (source: EP US)
A61B 5/024 (2013.01 - EP US); A61B 5/02405 (2013.01 - EP US); A61B 5/02455 (2013.01 - EP US); A61B 5/18 (2013.01 - EP US); A61B 5/349 (2021.01 - EP US); A61B 5/4809 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
EP 2087841 A1 20090812; EP 2087841 A4 20100106; EP 2087841 B1 20150819; JP 5383200 B2 20140108; JP WO2008065724 A1 20100304; US 2009275847 A1 20091105; US 7970459 B2 20110628; WO 2008065724 A1 20080605
DOCDB simple family (application)
EP 06833658 A 20061129; JP 2006323855 W 20061129; JP 2008546862 A 20061129; US 45705509 A 20090529